If you’re out partying and don’t have anywhere to stash your iPhone then these shoes could be for you. Designed by Alan Nguyen of Freedom of Creation, based in Amsterdam, these 3D printed shoes contain an integrated iPhone case tagged onto the side of the heel.

The ‘iPhone Mashup Shoe’ was originally exhibited at the Milan Design Week and Maison et Objet Paris last year, but has recently been shown at the launch of Print Shift, and on-demand 3D printing magazine based in London.

“We are like DJs,” Nguyen explained to the BBC, “because they take other people’s things and make something completely new.”

The iPhone shoe is dubbed a “mash up”, as it contains other designers’ case designs from FreshFiber, an 3D printed iPhone case and accessories site. The term ‘mash up’ comes from dance music DJs where elements from two or more dance tracks are mixed together to form a new one.

The iPhone Mashup Shoe is designed for a Euro size 37, U.S size 6, and Nguyen explains they are comfortable, even though he hasn’t tried them himself. As the shoe contains designs taken from other designers he is also pushing the boundaries of copyright, which was one of the main reasons for this fashion project.